Laser penetration cutting equipment for multilayer stacked section bars of tray frame

Abstract

The invention relates to the technical field of laser cutting, and discloses laser penetrating cutting equipment for tray frame multi-layer stacked profiles, which comprises a conveying part, the conveying part comprises a feeding part for conveying plate raw materials, and the discharging end of the feeding part is fixedly connected with a laser cutting part; and the collecting part comprises a collecting table, the collecting table is arranged at the discharging end of the feeding piece, and the collecting table is slidably connected with a feeding plate attached to the bottom of the abutting frame through a sliding rail base arranged at the top of the collecting table. According to the laser penetrating cutting equipment for the tray frame multi-layer stacked sectional materials, the problems that in the prior art, after a plate raw material is cut, the cut part directly falls on the ground, due to the fact that a certain height exists between the cutting position of the plate raw material and the ground, the edge of the plate raw material is impacted, and the plate raw material is damaged can be effectively solved. Local depression or overall warping is generated, and subsequent assembly or flatness requirements are affected.

Description

Technical Field

[0001] The present invention relates to the technical field of laser cutting, and in particular to a laser penetrating cutting device for multi-layer stacked profiles of a pallet frame. Background Art

[0002] A pallet is a device used for containerizing, stacking, handling, and transporting goods in logistics and transportation. It is an important basic tool in the modern logistics system. A pallet is mainly composed of a frame and support bars and is used to carry goods. When a pallet is produced, a conveyor mechanism is used to smoothly transport the wound sheet material along the track to the laser cutting processing area. During the transportation process, the sheet material will be extruded into a specified shape in the conveyor mechanism, and then the laser cutting equipment will cut the extruded sheet material according to the required length.

[0003] In the prior art, after the plate material is cut, the cut part falls directly to the ground. Since the cutting point of the plate material is at a certain height from the ground, this height will cause the edge of the plate material to be impacted, resulting in local depression or overall warping, affecting subsequent assembly or flatness requirements. In addition, the cut plate material will be irregularly distributed on the ground and needs to be collected manually, which will cause the staff to be scratched by the sharp edges of the cut plate material, posing a high safety hazard. Summary of the Invention

[0004] Technical problems solved In response to the above-mentioned shortcomings of the prior art, the present invention provides a laser penetration cutting device for multi-layer stacked profiles of pallet frames, which can effectively solve the problem in the prior art that after the plate raw material is cut, the cut part falls directly to the ground. Since the cutting point of the plate raw material is at a certain height from the ground, this height will cause the edge of the plate raw material to be impacted, resulting in local depression or overall warping, affecting subsequent assembly or flatness requirements.

[0005] To achieve the above objectives, the present invention is implemented through the following technical solutions: The present invention provides a laser penetration cutting device for multi-layer stacked profiles of a pallet frame, comprising: A conveying part, the conveying part includes a feeding piece that can be used to transport the plate material, and the discharge end of the feeding piece is fixedly connected to the laser cutting piece; The material receiving part includes a collecting table, which is arranged at the discharge end of the feeding piece, and the top of the collecting table is fixedly connected to the abutment frame, and the collecting table is slidably connected to the feeding plate that fits with the bottom of the abutment frame through a slide rail base arranged on the top of the collecting table, and the bottom of the feeding plate is provided with a linkage part, and a rectangular hole is opened on the top of the collecting table, and a collecting rack that can be used for centralized storage of profiles is detachably installed at the bottom of the collecting table, and the collecting rack is arranged just below the rectangular hole, and a correction piece that can be used to adjust the position of the profile is provided at the bottom of the collecting table; Wherein, a discharge piece that can be used to support the profile is provided in the rectangular hole.

[0006] Furthermore, the correction part includes a guide hole, which is opened at the top of the collecting table, and there are four guide holes. The collecting table is slidably connected to a movable frame that slides with the inner wall of the guide hole through a guide rail arranged at the bottom thereof, and the outer side of the movable frame is fixedly connected to a correction plate that can be used to adjust the position of the profile.

[0007] Furthermore, the correction part also includes a driving mechanism, which includes a ring gear, which is rotatably connected to the bottom of the collection platform through an annular groove set on its surface, and the inner wall of the ring gear is fixedly connected to a push block, and the bottom of the collection platform is fixedly connected to a bracket, and the bracket is connected to the adjacent surface of the movable frame by a spring, and an abutment rod fixedly connected to the movable frame is slidably connected in the bracket, and the abutment rod is fixedly connected to the end away from the movable frame with a ball block that fits the outer surface of the push block.

[0008] Furthermore, the linkage member includes an L-shaped plate, the L-shaped plate is fixedly connected to the bottom of the feed plate, and a rack is fixedly connected to the side of the L-shaped plate away from the feed plate.

[0009] Furthermore, a drive shaft is rotatably connected to the top of the collection platform near the rectangular hole, and a transmission gear meshing with the rack is fixedly connected to the top of the drive shaft. A rotating shaft is rotatably connected to the bottom of the collection platform, and a drive gear meshing with the ring gear is fixedly connected to the circumferential outer surface of the rotating shaft. Pulleys are respectively fixedly connected to the bottom of the drive shaft and the rotating shaft, and the two pulleys are connected by a synchronous belt.

[0010] Furthermore, the unloading part includes a fixed plate, which is fixedly connected to the side wall of the rectangular hole. There are four fixed plates. The fixed plate is slidably connected to the movable plate through a sliding groove arranged on its surface, and the movable plate is connected to the bottom of the fixed plate through an elastic part arranged at its bottom. The movable plate is slidably connected to the support plate through a slider arranged at its top.

[0011] Furthermore, a receiving groove is provided inside the fixing plate, an electromagnetic block is fixedly connected to the side wall of the receiving groove, and the support plate is magnetically connected to the electromagnetic block on the side close to the fixing plate.

[0012] Compared with the prior art, the technical solution provided by the present invention has the following beneficial effects: The present invention is provided with a collecting part, and the cut plate raw materials first fall on the feeding plate, and then the feeding plate and the abutment frame cooperate to push the plate raw materials onto the collecting table by the support bar, so as to avoid the plate raw materials directly hitting the ground after cutting, causing the edge of the plate raw materials to be impacted, resulting in local depression or overall warping, affecting the later use, and effectively protecting the integrity and quality of the plate. The correction part corrects the cut plate raw materials so that they are stacked in order on the unloading part, avoiding random distribution of the plate raw materials. This orderly collection method is convenient for staff to organize and carry, and improves work efficiency. At the same time, orderly stacking is also conducive to the rational use of space, making the collection area more tidy and standardized. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] To more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. Those skilled in the art can also derive other drawings based on these drawings without inventive effort.

[0014] Figure 1 It is a three-dimensional structural diagram of an embodiment of the present invention; Figure 2 This is a schematic cross-sectional structural diagram of a collecting platform according to an embodiment of the present invention; Figure 3 This is a schematic diagram of the three-dimensional structure of a correction component according to an embodiment of the present invention; Figure 4 For the embodiment of the present invention Figure 3 A schematic diagram of the structure at center A; Figure 5 This is a schematic diagram of the structure in which the linkage member and the collection platform are three-dimensionally separated according to an embodiment of the present invention; Figure 6 For the embodiment of the present invention Figure 5 A magnified schematic diagram of the structure at point B in the middle; Figure 7 This is a schematic structural diagram of the three-dimensional separation of the unloading parts according to an embodiment of the present invention; Figure 8 For the embodiment of the present invention Figure 7 A magnified schematic diagram of the structure at point C in the middle; Figure 9 It is a schematic diagram of the three-dimensional structure of the driving mechanism according to an embodiment of the present invention.

[0015] The numbers in the figure represent: 1. Conveying unit; 11. Feeding unit; 12. Laser cutting unit; 2. Receiving unit; 21. Collecting table; 22. Abutting frame; 23. Slide rail base; 24. Feeding plate; 25. Linkage unit; 251. L-shaped plate; 252. Rack; 253. Drive shaft; 254. Transmission gear; 255. Rotating shaft; 256. Drive gear; 257. Pulley; 258. Synchronous belt; 26. Rectangular hole; 27, collecting rack; 28, correction part; 281, guide hole; 282, moving rack; 283, correction plate; 284, driving mechanism; 2841, gear ring; 2842, push block; 2843, bracket; 2844, abutment rod; 2845, ball block; 29, unloading part; 291, fixed plate; 292, movable plate; 293, elastic part; 294, support plate; 295, storage slot; 296, electromagnetic block. DETAILED DESCRIPTION

[0016] To make the purpose, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative efforts shall fall within the scope of protection of the present invention.

[0017] The present invention will be further described below with reference to the embodiments. Example

[0018] See also Figures 1-9 The present invention provides a technical solution: a laser penetration cutting device for multi-layer stacked profiles of a pallet frame, comprising: The conveying part 1 includes a feeding member 11 for conveying plate raw materials, and a laser cutting member 12 is fixedly connected to the discharge end of the feeding member 11; The material receiving section 2 includes a collecting table 21, which is arranged at the discharge end of the feeding member 11. The top of the collecting table 21 is fixedly connected to an abutting frame 22. The collecting table 21 is slidably connected to a feeding plate 24 that fits in contact with the bottom of the abutting frame 22 through a slide rail base 23 arranged on the top of the collecting table 21, and a linkage member 25 is provided at the bottom of the feeding plate 24. A rectangular hole 26 is opened on the top of the collecting table 21. A collecting rack 27 that can be used for centralized storage of profiles is detachably installed at the bottom of the collecting table 21, and the collecting rack 27 is arranged directly below the rectangular hole 26. A correction member 28 that can be used to adjust the position of the profiles is provided at the bottom of the collecting table 21; A discharge piece 29 for supporting the profile is provided in the rectangular hole 26 .

[0019] The correction part 28 includes a guide hole 281, which is opened at the top of the collecting table 21, and there are four guide holes 281. The collecting table 21 is slidably connected to a movable frame 282 that slides with the inner wall of the guide hole 281 through a guide rail set at its bottom, and the outer side of the movable frame 282 is fixedly connected to a correction plate 283 that can be used to adjust the position of the profile.

[0020] The correction part 28 also includes a driving mechanism 284, which includes a ring gear 2841. The ring gear 2841 is rotatably connected to the bottom of the collecting table 21 through an annular groove set on its surface. The inner wall of the ring gear 2841 is fixedly connected to a push block 2842. The bottom of the collecting table 21 is fixedly connected to a bracket 2843, and the bracket 2843 is connected to the adjacent surface of the movable frame 282 through a spring. The bracket 2843 is slidably connected to an abutment rod 2844 fixedly connected to the movable frame 282, and the abutment rod 2844 is fixedly connected to the end away from the movable frame 282 with a ball block 2845 that fits the outer surface of the circumference of the push block 2842.

[0021] The linkage member 25 includes an L-shaped plate 251 , which is fixedly connected to the bottom of the feed plate 24 . A rack 252 is fixedly connected to the side of the L-shaped plate 251 away from the feed plate 24 .

[0022] A drive shaft 253 is rotatably connected to the top of the collecting table 21 near the rectangular hole 26, and a transmission gear 254 meshing with the rack 252 is fixedly connected to the top of the driving shaft 253. A rotating shaft 255 is rotatably connected to the bottom of the collecting table 21, and a driving gear 256 meshing with the ring gear 2841 is fixedly connected to the outer surface of the rotating shaft 255. Pulleys 257 are respectively fixedly connected to the bottom of the driving shaft 253 and the rotating shaft 255, and the two pulleys 257 are connected by a synchronous belt 258.

[0023] The unloading part 29 includes a fixed plate 291, which is fixedly connected to the side wall of the rectangular hole 26. There are four fixed plates 291. The fixed plate 291 is slidably connected to the movable plate 292 through a slide groove set on its surface, and the movable plate 292 is connected to the bottom of the fixed plate 291 through an elastic member 293 set at its bottom. The movable plate 292 is slidably connected to the support plate 294 through a slider set at its top.

[0024] A receiving groove 295 is defined inside the fixing plate 291 , and an electromagnetic block 296 is fixedly connected to the side wall of the receiving groove 295 . The support plate 294 is magnetically connected to the electromagnetic block 296 on the side close to the fixing plate 291 .

[0025] Cutting process of sheet material: Initially, the sheet material is wound around an external feed rack. One end of the sheet material is placed into feed element 11, which is then activated. Multiple sets of feed rollers (each set has two feed rollers, which rotate synchronously in opposite directions to move the sheet material) within feed element 11 gradually feed the sheet material toward laser cutting element 12. As the feed rollers convey the sheet material, they press it into a specific shape. As the sheet material passes through laser cutting element 12, it is cut to the desired length.

[0026] When the laser cutting element 12 is not cutting the sheet material, the slide base 23 will move the feed plate 24 at a constant speed until the feed plate 24 exceeds the abutment frame 22. When the sheet material is cut, it will gradually tilt downward (away from the laser cutting element 12) under the action of its own gravity until the sheet material (away from the laser cutting element 12) contacts the feed plate 24. As the feed plate 24 continues to move, the feed plate 24 will drive the cut sheet material to move synchronously until the cut sheet material is completely on top of the feed plate 24. The control slide base 23 drives the feed plate 24 to move in the opposite direction. When the sheet material on top of the feed plate 24 contacts the abutment frame 22, the abutment frame 22 will prevent the sheet material from following the movement of the feed plate 24, so that the support bar will be pushed down to the collection table 21 by the abutment frame 22. This can prevent the cut sheet material from falling directly to the ground, causing the edge of the sheet material to be impacted, resulting in local dents or overall warping, which would affect its later use.

[0027] The position adjustment process of sheet material: When the feed plate 24 moves away from the feed member 11, the L-shaped plate 251 at the bottom of the feed plate 24 drives the rack 252 to move synchronously. Since the rack 252 and the transmission gear 254 are meshed with each other, the transmission gear 254 drives the drive shaft 253 to rotate synchronously. In conjunction with the pulley 257, the timing belt 258, and the rotating shaft 255, the drive gear 256 can drive the ring gear 2841 to rotate. As the ring gear 2841 rotates at a constant speed, the push block 2842 (the push block 2842 has an outwardly convex arc design) gradually reduces the degree of pressure on the abutment rod 2844. The bracket 2843 is connected to the movable frame 282 via a spring, so that the movable frame 282 gradually returns to its original position along the guide hole 281 until the movable frame 282 is in the initial position. At this time, the distance between the correction plate 283 and the side wall of the rectangular hole 26 is the largest. With the cooperation of the feeding plate 24, the sheet material will enter the space surrounded by the four correction plates 283. As the feeding plate 24 is reset, the L-shaped plate 251, the rack 252, the transmission gear 254, the drive shaft 253, the pulley 257, the synchronous belt 258 and the rotating shaft 255 can realize that the driving gear 256 drives the gear ring 2841 to rotate, and then the push block 2842 will gradually increase the squeezing of the abutment rod 2844, so that the abutment rod 2844 can drive the movable frame 282 to move along the guide hole 281 toward the sheet material. The four movable frames 282 move synchronously, and the position of the sheet material can be adjusted so that the sheet material is in the center position of the rectangular hole 26, thereby realizing the correction of the sheet material. This reciprocating process can realize that each cut sheet material is stacked together in an orderly manner, which can avoid the random distribution of the cut sheet material and the need for manual collection again, and can avoid the staff from contacting the sharp edges of the cut sheet material, thereby reducing safety hazards.

[0028] It is worth noting that there are four guide holes 281, and the four guide holes 281 are respectively located at the top of the collecting table 21, and the center line of each guide hole 281 coincides with the center line of the corresponding rectangular hole 26 side wall. The four movable frames 282 can drive the correction plate 283 to correct the sheet material from all sides, ensuring that the sheet material can be in the center position of the rectangular hole 26, and the correction plate 283 is provided with a rubber pad close to the side of the sheet material, which can cushion the contact between the sheet material and the correction plate 283 to avoid excessive clamping force and deformation of the sheet material. The four abutment rods 2844 are divided into two groups, one group of abutment rods 2844 is longer, and the other group of abutment rods 2844 is shorter. The longer group is arranged near the longer side wall of the rectangular hole 26, and the shorter group is arranged near the longer side wall of the rectangular hole 26. When the gear ring 2841 rotates, the abutment rods 2844 can drive the corresponding movable frame 282 to move the same distance along the guide hole 281, which can ensure that the four correction plates 283 approach the plate raw material synchronously, which is conducive to correcting the position of the plate raw material after cutting is completed and avoiding its random distribution.

[0029] Centralized collection process of plate raw materials: As the feeding plate 24 continues to move back and forth, multiple cut plate materials can be moved to the vicinity of the rectangular hole 26, and the correction part 28 will correct each cut plate material so that each cut plate material will be stacked in an orderly manner on the unloading part 29.

[0030] In the initial state, the elastic member 293 will maintain a balanced state with the movable plate 292 and the support plate 294. At this time, the support plate 294 is flush with the collection table 21. When the sheet material begins to accumulate on the surface of the support plate 294, the gravity of the sheet material itself will destroy the balanced state of the movable plate 292, the support plate 294 and the elastic member 293. The sheet material, the movable plate 292 and the support plate 294 will slightly compress the elastic member 293 to restore it to a balanced state. This process repeats itself until a certain amount of sheet material is accumulated on the surface of the support plate 294. The movable plate 292 will drive the support plate 294 to move to the storage slot 295. Since the support plate 294 and the electromagnetic block 296 in the storage slot 295 are connected by magnetic force, the magnetic force generated by the electromagnetic block 296 will adsorb the support plate 294 into the storage slot 295, causing the accumulated sheet material to lose support and fall into the collection rack 27. This process repeats itself until the sheet material is continuously collected until the collection rack 27 is filled with sheet material.

[0031] It is worth noting that the size of the storage slot 295 is slightly larger than the support plate 294, which facilitates the smooth entry of the support plate 294 into the storage slot 295. The number of support plates 294 can be set as needed. Four support plates 294 are used here, and the four support plates 294 are divided into two groups, each group including two support plates 294. The two support plates 294 are symmetrically distributed along the longer side wall of the rectangular hole 26, which can increase the stability of the stacked sheet materials. The size of the collection rack 27 is adapted to the required cutting length of the sheet materials, which can prevent the cut sheet materials from being randomly distributed after entering the collection rack 27.

[0032] In summary, the present invention has the following advantages by using the collecting part and the conveying part 1: Advantage 1: After the laser cutting part 12 completes cutting of the plate material, the cut plate material first falls on the feed plate 24, and then through the cooperation between the feed plate 24 and the abutment frame 22, the plate material is pushed onto the collection table 21 by the support bar, avoiding the plate material from directly impacting the ground after cutting, causing the edge of the plate material to be impacted, resulting in local depression or overall warping, affecting the later use, and effectively protecting the integrity and quality of the plate.

[0033] Advantage 2: the correction part 28 corrects the cut sheet materials so that they are stacked in an orderly manner on the unloading part 29, avoiding random distribution of the sheet materials. This orderly collection method is convenient for the staff to organize and carry them, and improves work efficiency. At the same time, orderly stacking is also conducive to the rational use of space, making the collection area more tidy and standardized.

[0034] Advantage three: the coordination between the movable plate 292, the support plate 294 and the elastic part 293 and the adsorption effect of the electromagnetic block 296 enables the support plate 294 to automatically move to the storage slot 295 after a certain amount of sheet material is accumulated on the surface of the support plate 294, and unload the sheet material into the collection rack 27, thereby realizing the centralized collection of sheet material, reducing manual intervention and lowering labor intensity.

[0035] Advantage four: when the plate materials on the support plate 294 accumulate to a certain weight, gravity will cause the movable plate 292 to drive the support plate 294 to move, so that the accumulated plate materials will fall into the collection rack 27. Since the plate materials cut in the same batch have the same length, the amount of plate materials carried by the support plate 294 each time is relatively fixed, and they are released in batches, which improves the counting efficiency and realizes accurate statistics of the number of plate materials after cutting.

[0036] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the same. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements will not cause the essence of the corresponding technical solutions to deviate from the protection scope of the technical solutions of the various embodiments of the present invention.

Claims

1. A laser penetration cutting device for multi-layer stacked profiles of pallet frames, characterized in that: include: A conveying portion (1), the conveying portion (1) comprising a feeding piece (11) for conveying plate raw materials, a discharge end of the feeding piece (11) being fixedly connected to a laser cutting piece (12); A material receiving portion (2), the material receiving portion (2) includes a collecting table (21), the collecting table (21) is arranged at the discharge end of the feeding member (11), the top of the collecting table (21) is fixedly connected to the abutting frame (22), the collecting table (21) is slidably connected to a feeding plate (24) that fits the bottom of the abutting frame (22) through a slide rail base (23) arranged on the top of the collecting table (21), and the bottom of the feeding plate (24) is provided with a linkage member (25), a rectangular hole (26) is opened on the top of the collecting table (21), a collecting rack (27) that can be used for centralized storage of profiles is detachably installed on the bottom of the collecting table (21), and the collecting rack (27) is arranged directly below the rectangular hole (26), and a correction member (28) that can be used to adjust the position of the profiles is provided at the bottom of the collecting table (21); Wherein, a discharge piece (29) that can be used to support the profile is provided in the rectangular hole (26).

2. The laser penetration cutting device for multi-layer stacked profiles of a pallet frame according to claim 1, characterized in that: The correction member (28) includes a guide hole (281), which is opened on the top of the collecting table (21), and the guide holes (281) are provided with four. The collecting table (21) is slidably connected to a movable frame (282) that slides with the inner wall of the guide hole (281) through a guide rail provided at the bottom thereof, and a correction plate (283) that can be used to adjust the position of the profile is fixedly connected to the outer side of the movable frame (282).

3. The laser penetration cutting device for multi-layer stacked profiles of a pallet frame according to claim 1, characterized in that: The correction member (28) further includes a driving mechanism (284), the driving mechanism (284) including a gear ring (2841), the gear ring (2841) being rotatably connected to the bottom of the collecting platform (21) via an annular groove provided on its surface, a push block (2842) being fixedly connected to the inner wall of the gear ring (2841), a bracket (2843) being fixedly connected to the bottom of the collecting platform (21), and the bracket (2843) being connected to an adjacent surface of the movable frame (282) via a spring, an abutting rod (2844) being slidably connected to the inner side of the bracket (2843) and fixedly connected to the movable frame (282), and a ball block (2845) being in contact with the outer circumferential surface of the push block (2842) being fixedly connected to the end of the abutting rod (2844) away from the movable frame (282).

4. The laser penetration cutting device for multi-layer stacked profiles of a pallet frame according to claim 1, characterized in that: The linkage member (25) comprises an L-shaped plate (251), wherein the L-shaped plate (251) is fixedly connected to the bottom of the feed plate (24), and a rack (252) is fixedly connected to the side of the L-shaped plate (251) away from the feed plate (24).

5. The laser penetration cutting device for multi-layer stacked profiles of a pallet frame according to claim 1, characterized in that: The top of the collecting table (21) is rotatably connected to a driving shaft (253) near the rectangular hole (26), and the top of the driving shaft (253) is fixedly connected to a transmission gear (254) meshing with the rack (252). The bottom of the collecting table (21) is rotatably connected to a rotating shaft (255), and the outer circumferential surface of the rotating shaft (255) is fixedly connected to a driving gear (256) meshing with a gear ring (2841). The bottoms of the driving shaft (253) and the rotating shaft (255) are respectively fixedly connected to pulleys (257), and the two pulleys (257) are connected via a synchronous belt (258).

6. The laser penetration cutting device for multi-layer stacked profiles of a pallet frame according to claim 1, characterized in that: The discharge member (29) includes a fixed plate (291), which is fixedly connected to the side wall of the rectangular hole (26). Four fixed plates (291) are provided. The fixed plate (291) is slidably connected to a movable plate (292) via a sliding groove provided on its surface, and the movable plate (292) is connected to the bottom of the fixed plate (291) via an elastic member (293) provided at its bottom. The movable plate (292) is slidably connected to a support plate (294) via a slider provided at its top.

7. The laser penetration cutting device for multi-layer stacked profiles of a pallet frame according to claim 6, characterized in that: A receiving groove (295) is provided inside the fixed plate (291), an electromagnetic block (296) is fixedly connected to the side wall of the receiving groove (295), and the support plate (294) is magnetically connected to the electromagnetic block (296) on the side close to the fixed plate (291).

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